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28282832 = 2417103981
BaseRepresentation
bin110101111100…
…0111111010000
31222012220202022
41223320333100
524220022312
62450111012
7462254144
oct153707720
958186668
1028282832
1114a68346
12957b468
135b23506
143a83224
15273a172
hex1af8fd0

28282832 has 20 divisors (see below), whose sum is σ = 58021956. Its totient is φ = 13309440.

The previous prime is 28282829. The next prime is 28282841. The reversal of 28282832 is 23828282.

It can be written as a sum of positive squares in 2 ways, for example, as 16613776 + 11669056 = 4076^2 + 3416^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28282792 and 28282801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51719 + ... + 52262.

Almost surely, 228282832 is an apocalyptic number.

It is an amenable number.

28282832 is an abundant number, since it is smaller than the sum of its proper divisors (29739124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28282832 is a wasteful number, since it uses less digits than its factorization.

28282832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104006 (or 104000 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 28282832 is about 5318.1605842622. The cubic root of 28282832 is about 304.6779077603.

It can be divided in two parts, 2828283 and 2, that multiplied together give a triangular number (5656566 = T3363).

The spelling of 28282832 in words is "twenty-eight million, two hundred eighty-two thousand, eight hundred thirty-two".

Divisors: 1 2 4 8 16 17 34 68 136 272 103981 207962 415924 831848 1663696 1767677 3535354 7070708 14141416 28282832